Granary weevils are serious grain pests that are very distinguished from other beetles by a slender elongated snout. They are typically about an eighth-inch long and are dark brown or black in color. They also have multiple punctures on the top side of the thorax (chest) and nonfunctional wings. The grain weevil is closely related to the rice weevil but can be separated by their slightly smaller size and they fly poorly. Grain weevils bore holes into grain kernels to deposit their eggs. They have become adapted to living entirely in stored grains and rarely forage elsewhere. Females are capable of living up to 8 months when food is abundant and can lay approximately 200 – 300 eggs during this time.
April 30, 2010 by Kurt Dimeler